<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="类别名字" prop="categoryName">
        <el-input
          v-model="queryParams.categoryName"
          placeholder="请输入类别名字"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="类别描述" prop="categoryDescription">
        <el-input
          v-model="queryParams.categoryDescription"
          placeholder="请输入类别描述"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
     <el-form-item label="父类别" prop="categoryParentId">
        <el-input
          v-model="queryParams.categoryParentName"
          placeholder="请输入类别的父类别"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <!--<el-form-item label="是否删除" prop="isDelete">
        <el-input
          v-model="queryParams.isDelete"
          placeholder="请输入是否删除"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>-->
     <!-- <el-form-item label="图标" prop="icon">
        <el-input
          v-model="queryParams.icon"
          placeholder="请输入图标"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>-->
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['system:category:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:category:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:category:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:category:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="categoryList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <!--<el-table-column label="${comment}" align="center" prop="categoryId" />-->
      <el-table-column label="类别名字" align="center" prop="categoryName" />
      <el-table-column label="类别描述" align="center" prop="categoryDescription" />
      <el-table-column label="父类别" align="center" prop="categoryParentName" />

      <el-table-column label="图标" align="center" prop="icon" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['system:category:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['system:category:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改类别对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="类别名字" prop="categoryName">
          <el-input v-model="form.categoryName" placeholder="请输入类别名字" />
        </el-form-item>
        <el-form-item label="类别描述" prop="categoryDescription">
          <el-input v-model="form.categoryDescription" placeholder="请输入类别描述" />
        </el-form-item>
        <el-form-item label="父类别" prop="categoryParentId">
<!--          <el-input v-model="form.categoryParentId" placeholder="请输入类别的父类别" />-->
          <el-row class="block-col-2">
            <el-col :span="12">
              <el-dropdown trigger="click">
              <span class="el-dropdown-link">{{parentCategory}}<i class="el-icon-arrow-down el-icon--right"></i></span>
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item v-for="(item,index) in categoryList"
                                    :key="index"
                                    icon="el-icon-apple"
                                    @click.native="addParentCategory(item)">{{ item.categoryName }}</el-dropdown-item>

                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </el-form-item>
<!--        <el-form-item label="是否删除" prop="isDelete">
          <el-input v-model="form.isDelete" placeholder="请输入是否删除" />
        </el-form-item>
        <el-form-item label="图标" prop="icon">
          <el-input v-model="form.icon" placeholder="请输入图标" />
        </el-form-item>-->
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  listCategory,
  getCategory,
  delCategory,
  addCategory,
  updateCategory,
  findParentName, findParentIdByName, listCategoryAndName
} from '@/api/system/category'

export default {
  name: "Category",
  data() {
    return {
      //新增父类别选中
      parentCategory: '请选择父类别',
      //解决异步请求之后重新渲染数据
      showList: false,
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 类别表格数据
      categoryList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        categoryName: null,
        categoryDescription: null,
        categoryParentId: null,
        isDelete: null,
        icon: null,
        categoryParentName: null
      },
      categoryParentIdList: [],
      // 表单参数
      form: {},
      // 表单校验
      rules: {
      }
    };
  },
  created() {

    this.getList();

  },
  methods: {
    /** 新增父类别 下拉框选中*/
    addParentCategory(item,form) {
      this.parentCategory = item.categoryName
      return new Promise(resolve => {
        findParentIdByName(this.parentCategory).then(res =>{
          const categoryId = res.data[0].categoryId
          resolve(categoryId)
        })
      }).then(categoryIdRes=>{
        /*let stringCategoryIdRes = '\'' + categoryIdRes + '\''*/
        this.form.categoryParentId = categoryIdRes
      })
    },
    /** 查询类别列表 */
    getList() {
      this.loading = true;
      return new Promise(resolve => {
        listCategoryAndName(this.queryParams).then(response => {

          this.categoryList = response.rows;
          this.total = response.total;
          this.loading = false;
          resolve(response)
          //console.log(this.categoryList)
        });
        /** 根据id查询父类别的名字 */
      })
       /* .then(response =>{
        for (let i = 0; i < response.rows.length; i++) {
          //拿到查询列表的父类别id
          let categoryParentId = response.rows[i].categoryParentId
          //把找到的父id放到即将查询的父类别id列表中
          let parentIdList = this.categoryParentIdList
          parentIdList.push(
            //根据ID查找父类别的名字
            categoryParentId)
          //根据父id找名字请求
          findParentName(parentIdList[i]).then(response => {
            let resName = response.msg
            this.categoryList[i].categoryParentName = resName
          });

        }

        this.loading = false;
      })*/

    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        categoryId: null,
        createTime: null,
        categoryName: null,
        categoryDescription: null,
        categoryParentId: null,
        isDelete: null,
        icon: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.categoryId)
      this.single = selection.length!==1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加类别";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const categoryId = row.categoryId || this.ids
      getCategory(categoryId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改类别";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.categoryId != null) {
            updateCategory(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();

            });
          } else {
            addCategory(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.showList=false;
              this.getList();

            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const categoryIds = row.categoryId || this.ids;
      this.$modal.confirm('是否确认删除类别编号为"' + categoryIds + '"的数据项？').then(function() {
        return delCategory(categoryIds);
      }).then(() => {
        this.showList=false;
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('system/category/export', {
        ...this.queryParams
      }, `category_${new Date().getTime()}.xlsx`)
    }
  }
};
</script>

